Are you in need for a program to open ost files. In that case you would obviously use a third-party MS Exchange OST data recovery tool like OST Opener software to open ost file & access your mailbox data contained in the inaccessible and unusable offline OST files. Your entire effort to invest into such tool and use it is to regain the lost email data back after the recovery so that you can open ost file contents and make use of those email contents for resuming your work operations.
Now, when you use OST Recovery software to recover your OST email data to PST; they are easily readable back in MS Outlook application. So, after you use this OST2PST software to recover OST data into PST file, the major thing is to open ost file back into Outlook. So, for that, follow the steps below: